Fire extinguisher



FIG. 1 is a top, front, left side perspective view of a fire extinguisher showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a bottom, rear perspective view thereof.

The broken lines in the drawings show portions of the fire extinguisher that form no part of the claimed design. 

CLAIM The ornamental design for a fire extinguisher, as shown and described. 